Nielsen Hayden genealogy
Siegfried I of Blankenburg
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- 1 Siegfried I of Blankenburg [1]
-
- 2 Heinrich I of Blankenburg and Regenstein [1.1]
- (Unknown) von Polleben
- 3 Ulrich I von Regenstein [1.1.1] d. Between 24 Jun 1265 and 5 Jun 1267
- Mathilde
- 4 Mechtild von Regenstein [1.1.1.1] [ =>]
- Mathilde
- 3 Ulrich I von Regenstein [1.1.1] d. Between 24 Jun 1265 and 5 Jun 1267
- (Unknown) von Polleben
- 2 Heinrich I of Blankenburg and Regenstein [1.1]
-